AuthorTaylor Hornby

AverageSecurityGuy’s 2017 Entry: A PRNG that Zeroes its Seed

AverageSecurityGuy‘s entry to the 2017 Underhanded Crypto Contest is a pseudorandom number generator that zeroes out its own seed. The code generates two actually-random seeds for the generator and then “shuffles” them as follows, where “xor_byte_arrays” is a function that XORs two byte arrays together and returns the result in a new array: /* Shuffle the keys with...

New Deadline: July 5th, 2017

To give you all some more time to work on your entries, we’ve extended the deadline to Wednesday, July 5th, 2017. We chose this new date because it’s after the Canada Day long weekend and after Independence Day in the United States. If you’ve already submitted an entry, you’re welcome to re-submit it before the new deadline if the extra time allows you to make improvements.

Announcing Judges and Prizes for the 2017 Contest

Our sponsors understand the value of the time and creativity you put in to your Underhanded Crypto entry, and they’re backing that up with some awesome prizes for the winners this year. Here they are. The Zcash Prize: 15 ZEC. (See the USD↔ZEC exchange rate on Zchain)     The NCC Group Cryptography Services Prize: $500 (US).   The first-place winner will get to pick whichever...

Get Ready for The 2017 Underhanded Crypto Contest

The Underhanded Crypto Contest is back, and we can’t wait to see all the nifty tricks you’ll come up with to put backdoors into cryptography. Last year we wanted to see backdoors that exclusively related to cryptocurrencies, and we didn’t get much of a response. So, this year, we’re open to any kind of crypto backdoor that you can think of. To give you all a head start...

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